| 摘要 |
A vacuum separator of metal for separating impurities from half-refined metal prepared by reducing a metal chloride by a metallic reducing agent. The impurities include the surplus or unreacted metallic reducing agent and reaction by-products. The vacuum separator comprises a body and a heating furnace. The body accommodates an inner cylindrical member with a carrier means carrying reduced half-refined metal to be treated. The body includes an upper portion holding the inner cylindrical member, and a lower portion receiving the surplus or unreacted reducing agent and the reaction by-products. The furnace includes a conduit connected to a vacuum pump to reduce the inner pressure of the body, a first portion heating the inner cylindrical member held by the upper portion of the body, and a second portion heating the lower portion of the body. The second portion of the furnace melts away crusts deposited in the vessel as solid substance firmly adhered to the wall of the lower portion of the body.
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